Ionic Compounds and Electronegativity

The video tutorial explains how to determine if magnesium fluoride (MgF2) is ionic or covalent. It presents two methods: examining the periodic table to identify metals and nonmetals, and calculating the difference in electronegativity between magnesium and fluorine. The tutorial concludes that MgF2 is ionic due to the presence of a metal and a non-metal, and a significant electronegativity difference.

What are the two main methods to determine if MgF2 is ionic or covalent?

• Using atomic mass and molecular weight

• Using boiling and melting points

• Using the periodic table and electronegativity differences

• Using color and texture

In the periodic table method, what type of elements form ionic compounds?

• Metalloids and noble gases

• Non-metals and metalloids

• Metals and metalloids

• Metals and non-metals

Where is magnesium located on the periodic table?

• In group 18

• In group 2

• In group 1

• In group 17

What is the significance of a metal and a non-metal combination in a compound?

• It forms a covalent compound

• It forms an ionic compound

• It forms a metallic compound

• It forms a non-metallic compound

What is the electronegativity value of fluorine?

• 4.5

• 1.3

• 2.5

• 3.98

What is the minimum electronegativity difference required for a compound to be considered ionic?

• 1.0

• 1.5

• 2.5

• 2.0

How do you calculate the electronegativity difference between magnesium and fluorine?

• Multiply the electronegativities of magnesium and fluorine

• Add the electronegativities of magnesium and fluorine

• Subtract the electronegativity of magnesium from fluorine

• Divide the electronegativity of fluorine by magnesium

What is the conclusion about the nature of MgF2 based on the discussed methods?

• MgF2 is a non-metallic compound

• MgF2 is a metallic compound

• MgF2 is a covalent compound

• MgF2 is an ionic compound